Category

Virgo Cluster

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barred spiral galaxy in the constellation Serpens

Markarian's Chain

astronomical object

galaxy (same as NGC 4443)

pair of galaxies in the constellation Virgo

VIRGOHI21 is an extended region of neutral hydrogen (HI) in the Virgo Cluster discovered in 2005. Analysis of its internal motion indicates that it may contain a large amount of dark matter, as much as a small galaxy. Since VIRGOHI21 apparently contains no stars, this would make it one of the first detected dark galaxies. Skeptics of this interpretation argue that VIRGOHI21 is simply a tidal tail of the nearby galaxy NGC 4254.

dwarf irregular galaxy

NGC 4567 and NGC 4568

galaxy pair in the constellation Virgo

M60-UCD1 is an ultracompact dwarf galaxy. It is 49 million light years from Earth, close to Messier 60 (M60, NGC 4649) in the Virgo Cluster. Half of its stellar mass is in the central sphere 160 light years in diameter.

galaxy in the constellation Virgo

SDSS J1229+1122